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  <a name="EN-US_TOPIC_0000002199967357"></a><a name="EN-US_TOPIC_0000002199967357"></a>
  <h1 class="topictitle1">An Internal Error Occurs During the Subjob of a Restoration Job</h1>
  <div>
   <div class="section">
    <h4 class="sectiontitle">Symptom</h4>
    <p>The job of GaussDB T log-based restoration or restoration to any point in time fails and a message indicating an internal error is displayed in the job details area on OceanProtect WebUI.</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Possible Cause</h4>
    <p>The system time of the host where the client is installed has been changed for multiple times. As a result, the copy time is disordered, and the start time and end time for executing a restoration job reported during log backup are incorrect.</p>
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    <h4 class="sectiontitle">Troubleshooting</h4>
    <ol>
     <li><span>Log in to the database host for which restoration fails and use Roach to restore GaussDB T to any point in time.</span><p></p>
      <ul>
       <li>If a message indicating that restoration to the specified time point fails is displayed, go to <a href="#EN-US_TOPIC_0000002199967357__li237226172110">2</a>.</li>
       <li>If the restoration fails and other messages are displayed, contact Huawei technical support engineers.</li>
      </ul> <p></p></li>
     <li id="EN-US_TOPIC_0000002199967357__li237226172110"><a name="EN-US_TOPIC_0000002199967357__li237226172110"></a><a name="li237226172110"></a><span>Check whether the time of all GaussDB T hosts is consistent.</span><p></p>
      <ul>
       <li>If no, change the host time to ensure that the time of all GaussDB T hosts is consistent.</li>
       <li>If yes, perform <a href="#EN-US_TOPIC_0000002199967357__li3919544132113">3</a>.</li>
      </ul> <p></p></li>
     <li id="EN-US_TOPIC_0000002199967357__li3919544132113"><a name="EN-US_TOPIC_0000002199967357__li3919544132113"></a><a name="li3919544132113"></a><span>Find all previously generated copies and use Roach to delete all of them.</span></li>
     <li><span>On the OceanProtect WebUI, manually perform log-based restoration and then restoration to any point in time in sequence again.</span><p></p>
      <ul>
       <li>If the restoration succeeds, no further action is required.</li>
       <li>If the restoration fails, contact Huawei technical support engineers.</li>
      </ul> <p></p></li>
    </ol>
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     <strong>Parent topic:</strong> <a href="en-us_topic_0000002199967361.html">FAQs</a>
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